Method of assembling cores of electrical apparatus.



E. R. KNIGHT.

METHOD 0F ASSEMBLING CORES 0F ELECTRICAL APPARATUS. APPLICATloN FILED 050.11.1913.

1,156,297. Patented 0ct.12, 1915.

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E. R. I( IIGH'.

METHOD 0F ASSEIVIBLING COREE 0F ELECTRICAL APPARAT S.

APPLICATION FILED DEC. Il, I9I3.

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a threaded portion l?) h); means oil? which motion is transmitted to said. mandrel and guide. laminated core i0., to he preseed e ical apparatus. formed about rel and is held hetvveen two coniq' heavy; metal plates 2l. and 2L the 'f vv iieh rests upon the upper portion toi-nier o'lI which is ire h v a cap i225. This piate 'fl h v a nut 2l portion ot the sna'tt e' dovvn upon a collar Q43, which is inter .osed hetvv len the nut 2i;

" 'lhe hase i() provided vv' upon which the vole 2?' oi,Z a und xl cti-ie machii'ie mav he placed. preparatoiv `o having* the core 2O pressed into it.

Iv.The mechanism ior actuating' the guide 13 and mai'unel il ivith the core Q0 secured thereto` comprises a hand ivheel QS having' a threaded portion vvhieh enl agges the thread* ed portion iS) olf the shaft Secured to this rand nheel a lTear ivneel :lso ened portion i9 oi" the shaft when `vvith another Qeai.'

rovided with a shaft 3 transmitted through a i .e l`Y notion to lvvhich l unirersa Iuint "f2 and shaft lil from handle 3ft The sl passes through a j 35 'formed ini' vvith one ol the l l). The shui?"k Sill passes throuejh a ple o5 n hich is seemed to the legis it an( hv holte Bti and engages shoulde portion ot said legs to prevent the upward rio*v ent oiIl the plate Y n t "l1 is secured to 1 ilo i holtf; 'l. This niemliier w YlY 'i i siii 'tor the hand wheel and the l'eai wheel h said hand and Ieear wheels heine' int ma heine has heen placed upon the l e and the core :2P has heen mounted upon the mandrel and initialljv7 eon'ipressed a slight ig. ton o'l2 the vene. ,vheel is rotated f 'raduallv dravvingy the n ivt'ter the core is "o eompletelv into the Vvol{e the metal l heine' toi-ced dovvn l'ielovv a groove ed in the vole. i` split retaining` ring' .aeed in said groove for retaining the laminated core in its proper position the netal plate heine' ioreed against a s i3 the volte. net this point` the iut :2,i mav he screwed ott the shaift 'i8 and the collar .QG and cap 23 also removed from the sha'i't. rlhe cap Q3 is provided With handles l1-l1 so that the fan niav he removed without an)Y particular diilieulty. After the cap has been removed the collar 26 and nut 2i ma)Y he again placed on the sha'lt lo with the collar eiewil'inpj the upper surface ot the mandrel l r. iv turning! the hand \vheel again in the same direction the niaiulrel \vill he drawn out oi. the laminated core il) and the stator volie in its complete foi-nn proiceiV it hasl heen properl \7 n'iachined in the rst. place`r is readv to receive its winding. l" it desired to here or nniehine the rigator Iter the core has heen pressed into the volte, niitahle mandrel may be used `tor that nirpose and he kept in the core structure l the machine has heen couipleted. @auch ari nggement ivill he considered in the pneu natiealljv operated machine to he reshalt a rapid movement and is adapted onlv7 tor light \vorl{ vvhile the hand wheel is used Yfor the heevv ivorl; oi3 pressing` cores into the voles his manuali)v operated core assemhling machine is more particuhn'l;T adapted for assemhhug cores ot comparatlvelyv small ovnamo-eiectrie machines. `For the purpose ot pressing cores into comparatively large dvnaino-electric n'niehines` machine is provided vfhich is operated `pneiunatieallv and which is illustr; ted in Figs. 5 to il inclusive. it is not desired to he limited to pneumaticall'v operated n'iachines, for hydraulic7 steaidonei-ated. or anv power operated machine or anyv other neans can he used :tor ari-ving` ont, the invention. rilhe hase 4:5 of this pneumatic: ll),7 operated machine or device is provided ivith three legs el@7 i7, and i-S which are secured to an);Y suitahle Ytounihition h v toundation 1oolts 50. This hase l5 has a hored portion 4:7 in which a guide -l-S@ adap'ed to slide. rl`his guide is provided with a groove which receives t feather il lfor keepin;`I` said guide 'from turning); ythe hase l5 is adapted to support a volie 5l oi? a dvnano-electrie machine adapted to receive a laminated core 52 which is mounted on a mandrel having,Y a huh 'rl. A threaded stem passes through the huh :-land engages i, shaft, 5G to v-:hieh the guide .48 is secured. ,A nut 5i' engaging; the stem 55 presses dovvn on the huh 5l ot the mandrel which includes au annula member 5S holted to the main port-ion ot the mandrel. Secured to a tlannjd portion 59 oit the mandrel are steel plates (30 which act as centering` and guidine` portions for the laminations in assembling the core. These plates 60 may have any thickness and curvature 'to be used in connection with any particular core, that is, by using dii'l'erent sets of such plates, the plates of each set being of the same radial thickness and curvature, cores ot dil'lerent internal diameters may be assembled. rlfhese steel plates are arranged circumterentially of the mandrel and occur alternately with the bolts J1 which hold the plate 5S against the laminated core. The lower end of the shaft or movable member 56 is provided with a piston 62 vrhich is adapted to move in a cylinder G3 having end heads G-i and G5. The cylinder is secured to the base by bolts 66. The cvlinder 63 is provided with ports G7 and GS for the reception and expulsion of a fluid to be used tor actuating the piston. The cylinder is connected to a liuid source 69 through valves '70 and 71 which control the admission and exhaust of fluid into and from the cylinder ('33. rlhe valve 70 is connected to the source of fluid supply by a pipe 72, to the upper end of the cylinder 63 by pipe 73, and to an exhaust pipe 74. Likewise valve 71 is connected to the source by a pipe 7 5 to the lower end of the cylinder 63 by pipe 7 G, and to an exhaust pipe 77.

Wrhen the yoke 51 is properly placed on the base Ll5 and the laminated core 52 mounted on the mandrel 53, valve 70 is operated to permit a flow of fluid through pipe 73 into the upper end of the cylinder G3, torcing the piston 62 downwardly and drawing the core 52 into the yoke 51. llVhen the core has been drawn in the yoke 51 to the point where it engages the retaining ring 78, the upper portion of the core is pressed beyond the groove '79 in which is then placed another retaining ringl for holding the core in a fixed position. The machine in this positionis illustrated in Fig. 7. The nut 57 may now be removed and the yoke with its laminated core, having the mandrel still located within the core, be mounted upon a boring machine to properly machine the yoke. The yoke, core, and mandrel are then brought back as a unit and again placed on the base of the assembling machine and the stem 55 passed through the hub ot the mandrel. The nut 57 is then again screwed down tightly upon the hub of the mandrel and the valve 70 is operated to pass more fluid through the pipe 73 to the upper part of the cylinder (i3 to force the piston downward until the mandrel is completely removed from the core as shown in Fig. 9. The stator is now ready to be wound. The valves 70 and 71 can now be operated so that fluid may pass through the pipe 76 forcing the piston G2 upwardly and permitting the exhaust fluid to be forced out of pipes 73 and 74. By using` a pneumatic machine such as is here disclosed, any

required power may be obtained ttor torcing cores of any size into yokes oit dynamoelectric machines.

ll'hile specilic machines have been described, by the aid of which this invention may practised, these machines do not form a part of the present invention, being claimed in applicants eopending` application, Serial No. S9-LSH, liled November 30, 1910.

lt should be understoodi'hat the specilie machines described merely indicate manners oi" practising` the invention; for, obviously, the same may be practised by means other than those shown, or by hand. Further, it is not desired to be limited to the exact details otl the method described lor practising the invention except as required by the scope ot' the appended claims, for obrious modifications may occur to a person skilled in the art.

lt is claimed and desired 'to secure by Letters Patent:

1. A method of assembling a laminated core in a dynamo-electric machine which crauin'ises `.Forming the core exterior to the machine, iiorcing the core into the yoke of said machine, and securing the core in fixed position in said yoke.

2. A method oi assembling` a laminated core in electrical apparatus, which comprises iorming the core exterior to said apparatus, forcing said core into the trame of said apparatus, and securing said core in ixed position relative to said frame.

A method of assembling a core made up ot' a plurality of laminations in a dynamoelectric machine, which comprises forming said core oit said laminations on a. member exterior to said machine, actuating said member to torce said core into the yoke oi said machine, and then removing said member from said core.

A method of assembling a laminated core in a dynamo-electric machine, which comprises compressing a plurality of lamiY nations and securing said laminations in such compressed condition on a part exterior to said machine, actuating said part to insert said core in the frame of said machine, securing said core .in said frame, and then removing said part 'from said core.

5. A method of assembling a core in a dynamo-electric machine, which comprises forcing and holding together a plurality of annular laminations on a member having a guiding` portion for said laminations, inserting said member and core within the frame of said machine, securing said core in said trame, and withdrawing said guiding portion from said core.

6. A method of assembling a portion of a dynamo-electric machine, which comprises forming a core of annular laminations on a member exterior to the yoke of said mawhine, insel-ting said core amil member in saifl yol'e and seeming Jhe core in .Fixed posi- "ieu relalziye *go Said yoke, and machining;`

kl, Yoke with Said member in position in l more.

T. A, method e'f assembling a complete Yoke amil, core mi. a h ,'iiah10-ele :wie machine, which comprises lioleing and. holding 0- 'elhei a phil-alii;y olf humiliations 011 a member having a guide poi-tion for Said laminaiehs lo ferm a Core, inserting and securing Saiil member and core Within he )'elie of Said mzlehihev1 machining said yoke ii'ilh Saii'l ineml'lei' in peaiion i'vihii Said core,

hei from said Core.

uml removing Said mem Copiaa of this patent may be obtained fof ve cents each, by addressing "che Commissioner a. L method of assembling z Coie in a dynaiiio-electiic maeiine which 'teii'ipi'ises forming the wie exielim to a "ilmei'tiiig eleiuea eli Saicl machine,

ine-hh and Securing sai/el core in ,such hosition. l L' u estimmlj whereof, the signataire of lil i laminated l 1: iiivenoi' is allixel heielo in he plfesemfe olf 25 Washington, C. 

